CN206256977U - Double-throat carburetter - Google Patents
Double-throat carburetter Download PDFInfo
- Publication number
- CN206256977U CN206256977U CN201620282814.3U CN201620282814U CN206256977U CN 206256977 U CN206256977 U CN 206256977U CN 201620282814 U CN201620282814 U CN 201620282814U CN 206256977 U CN206256977 U CN 206256977U
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- China
- Prior art keywords
- throat
- double
- carburetter
- jet pipe
- throttle
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Control Of The Air-Fuel Ratio Of Carburetors (AREA)
Abstract
The utility model is related to Manufacturing Technology for Carburetors field, and in particular to a kind of double-throat carburetter, it includes body（29）, the body include the part of upper, middle and lower three, upper part include air throttle（7）, choke（11）With throttle plate pin component（1）；Middle part point includes primary venturi（32）, main jet（15）With main jet pipe（12）；Bottom point includes air inlet and float chamber part（16）.Primary venturi (32) and secondary trunnion (33), main jet pipe are provided between inlet chamber (31) and mixing chamber (30)（12）Jet pipe oil-out（34）On secondary trunnion (33), make the gas from inlet chamber (31) in jet pipe oil-out（34）The flow velocity at place is substantially increased, and suction is increased, so as to increase fuel delivery, solves the problems, such as that engine oil is not enough.
Description
Technical field
The utility model is related to Manufacturing Technology for Carburetors field, in particular to a kind of double-throat carburetter.
Background technology
With social constantly progressive, economic fast development, for general gasoline engines industry further development provide one it is good
Good platform.Wherein, general gasoline engines industry is booming, so as to promote general gasoline engines to aid in industry to develop rapidly.Its
In, carburetor industry is exactly the one kind in many general gasoline engines auxiliary industries.
Carburetor is exactly to mix a number of fuel oil with air, so that the main device of normal working of engine.
In engine startup, by closing inlet channel, air capacity is reduced, increase makes into the concentration of the gaseous mixture of engine
Engine is started.But, but generally existing is not enough for carburetor on the market.Due to the diminution of channel cross-sectional area, gas at trunnion
Rate of flow of fluid increases, pressure reduction produce bigger suction and for some powerful engines, what carburetor throat need to be processed
Larger, trunnion is smaller with sectional area variable quantity at inlet chamber, has suction not enough at trunnion, and fuel-displaced few, engine oil is not
The phenomenons such as foot.
Such as publication No. is the Chinese invention patent of the A of CN 102797591, and it discloses a kind of carburetor, it includes section
Valve, float chamber and atomization fan, air throttle lower section are provided with float chamber, and air throttle and float chamber are each independent, air throttle lower section
Atomization fan is provided with, secondary venturi is provided with float chamber, secondary venturi is fixedly connected with nozzle.This carburetor structure is simple, uses
It is convenient, it is practical, the quality of atomization is improve, gas can be sufficiently mixed so that be able to uniformly, effectively improve at most
The compression ratio of engine, extends the service life of carburetor, it is easy to popularization and application.But one is provided only with the carburetor
Trunnion, its operating efficiency is relatively low, and easily occurs inhaling hypodynamic phenomenon at trunnion.
Utility model content
In order to solve the technological deficiency of prior art presence, the purpose of this utility model is to provide a kind of pair of trunnion carburetion
Device, only one of which trunnion in the prior art is solved by increasing by a trunnion, has suction not enough at trunnion, fuel-displaced few, engine
The phenomenons such as fuel feeding deficiency.
A kind of double-throat carburetter, it includes body, the body include the part of upper, middle and lower three, upper part include air throttle,
Choke, Air strangler spindle, throttle plate pin component and control arm；Middle part point include primary venturi, main metering pin, main jet pipe, mixing chamber and
Inlet chamber；Bottom point includes air inlet and float chamber part, and primary venturi and secondary trunnion are provided between mixing chamber and inlet chamber；Main jet
Jet pipe oil-out is provided with pipe；Jet pipe oil-out is located in secondary trunnion.
A negative pressure can be produced in engine action process, pipeline is connected extraneous air in negative pressure work with mixing chamber
Under, into inlet chamber, primary venturi is flowed through, engine is mixed into jet pipe oil-out gasoline out at primary venturi,
The jet pipe oil-out of primary venturi increased a secondary trunnion, make flow velocity of the gas from mixing chamber at jet pipe oil-out obvious
Increase, suction is increased, so as to increase fuel delivery, solve the problems, such as that engine oil is not enough.
Preferably, diameter of the diameter of the secondary trunnion less than or equal to primary venturi.
In any of the above-described scheme preferably, the throttle plate pin component is located at the top of air throttle, and air throttle is by two
Individual screw is fastenedly connected.
In any of the above-described scheme preferably, the throttle plate pin component is provided with dust cap, dust-proof cushion, plastics back-up ring
And split washer.
In any of the above-described scheme preferably, the throttle plate pin component includes throttle plate pin, outside the throttle plate pin
Side is provided with throttle opening adjusting screw, and spring is provided with outside the screw.
In any of the above-described scheme preferably, the control arm is fastenedly connected by trip bolt.
In any of the above-described scheme preferably, the Air strangler spindle is located at the top of choke.
In any of the above-described scheme preferably, the main jet pipe is located between exhaust valve and choke.
In any of the above-described scheme preferably, the float chamber part includes float assembly and needle-valve assembly.
In any of the above-described scheme preferably, it is provided with sealing ring at the top of the float chamber part.
In any of the above-described scheme preferably, the lower end of the float assembly is provided with float pin.
In any of the above-described scheme preferably, the lower end of the needle-valve assembly is provided with needle valve spring.
In any of the above-described scheme preferably, main jet is provided with the main metering pin, the lower end of main metering pin is provided with electromagnetism
Valve seat.
In any of the above-described scheme preferably, the solenoid valve seat is resisted against on electromagnetism valve assembly.
In any of the above-described scheme preferably, the lower end of the solenoid valve seat is provided with the first O-ring seals and the 2nd O shapes
Sealing ring.
In any of the above-described scheme preferably, the electromagnetism valve assembly is fixed by screw association part with float chamber component
Connection.
Brief description of the drawings
Fig. 1 is the structural representation according to a preferred embodiment of double-throat carburetter of the present utility model.
Fig. 2 is the plan view according to preferred embodiment shown in double-throat carburetter Fig. 1 of the present utility model.
Fig. 3 is the A-A directions sectional view of preferred embodiment shown in Fig. 2 according to double-throat carburetter of the present utility model.
Fig. 4 is the B-B directions sectional view of preferred embodiment shown in Fig. 2 according to double-throat carburetter of the present utility model.
Fig. 5 is the C-C directions sectional view of preferred embodiment shown in Fig. 2 according to double-throat carburetter of the present utility model.
Fig. 6 is the D-D directions sectional view of preferred embodiment shown in Fig. 1 according to double-throat carburetter of the present utility model.
Label in accompanying drawing：
Throttle plate pin component 1, dust cap 2, dust-proof cushion 3, plastics back-up ring 4, split washer 5, screw 6, air throttle 7 is manipulated
Arm 8, trip bolt 9, Air strangler spindle 10, choke 11, main jet pipe 12, sealing ring 13, float assembly 14, main jet 15, float
Room part 16, the shape sealing ring 18 of solenoid valve seat the 17, the 1st, the 2nd 0 shape sealing ring 19, screw association part 20, electromagnetism valve assembly
21, needle-valve assembly 22, float pin 23, needle valve spring 24, idle metering jet 25, jam 26, spring 27, throttle opening adjusting screw
28, body 29, mixing chamber 30, inlet chamber 31, primary venturi 32, secondary jet pipe 33, oil-out 34 of spraying.
Specific embodiment
It is that the following description is substantially merely exemplary and be not intended to limitation the disclosure, using or purposes.Below
The specific embodiment of the utility model double-throat carburetter is further described with reference to Figure of description.
Refering to shown in Fig. 1-Fig. 3, according to the structural representation of a preferred embodiment of double-throat carburetter of the present utility model
Figure.Double-throat carburetter of the present utility model, it includes body 29, and the body includes the part of upper, middle and lower three, and upper part includes section
Valve 7, choke 11, Air strangler spindle 10, throttle plate pin component 1 and control arm 8；Middle part point includes primary venturi 32, main metering pin, master
Jet pipe 12, mixing chamber 30 and inlet chamber 31；Bottom point includes air inlet and float chamber part 16, mixing chamber 30 and inlet chamber 31 it
Between be provided with primary venturi 32 and secondary trunnion 33；Jet pipe oil-out 34 is provided with main jet pipe 12；Jet pipe oil-out 34 is located at secondary trunnion 33
Interior (as shown in Figure 6).
A negative pressure can be produced in engine action process, pipeline is connected extraneous air in negative pressure with mixing chamber 30
Under effect, into inlet chamber 31, primary venturi 32 is flowed through, the gasoline with jet pipe oil-out 34 out at primary venturi 32 is mixed into
Engine, a secondary trunnion 33 is increased in the jet pipe oil-out 34 of primary venturi 32, the gas from mixing chamber is gone out in jet pipe
Flow velocity at hydraulic fluid port 34 is substantially increased, and suction is increased, so as to increase fuel delivery, solves the problems, such as that engine oil is not enough.
In the present embodiment, diameter of the diameter of the secondary trunnion 33 less than or equal to primary venturi 32.
In the present embodiment, the throttle plate pin component 1 is located at the top of air throttle 7, and air throttle 7 is tight by two screws 6
It is solidly connected.
In the present embodiment, the throttle plate pin component 1 is provided with dust cap 2, dust-proof cushion 3, plastics back-up ring 4 and opening gear
Circle 5.
In the present embodiment, the throttle plate pin component 1 includes throttle plate pin, and air throttle is provided with the outside of the throttle plate pin
Aperture regulation screw 28, is provided with spring 27 (as shown in Figure 2) outside the screw.
In the present embodiment, the control arm 8 is fastenedly connected by trip bolt 9.
In the present embodiment, the Air strangler spindle 10 is located at the top of choke 11.
In the present embodiment, the main jet pipe 12 is located between exhaust valve 7 and choke 11 (as shown in Figure 3).
In the present embodiment, the float chamber part 16 includes float assembly 14 and needle-valve assembly 22.
In the present embodiment, the top of the float chamber part 16 is provided with sealing ring 13.
In the present embodiment, main jet 15 is provided with the main metering pin, the lower end of main metering pin is provided with solenoid valve seat 17.
In the present embodiment, the solenoid valve seat 17 is resisted against on electromagnetism valve assembly 21.
In the present embodiment, the lower end of the solenoid valve seat 17 is provided with the first O-ring seals 18 and the second O-ring seals
19。
In the present embodiment, the electromagnetism valve assembly 21 is fixedly connected by screw association part 20 with float chamber component 16.
As shown in fig. 6, according to double-throat carburetter of the present utility model Fig. 2 shown in the D-D directions of preferred embodiment cut open
View.
Primary venturi 32 and secondary trunnion 33 are provided between mixing chamber 30 and inlet chamber 31；Jet pipe oil-out is provided with main jet pipe 12
34；Jet pipe oil-out 34 is located in secondary trunnion 33.
A negative pressure can be produced in engine action process, pipeline is connected extraneous air in negative pressure with mixing chamber 30
Under effect, into inlet chamber 31, primary venturi 32 is flowed through, the gasoline with jet pipe oil-out 34 out at primary venturi 32 is mixed into
Engine, a secondary trunnion 33 is increased in the jet pipe oil-out 34 of primary venturi 32, the gas from mixing chamber is gone out in jet pipe
Flow velocity at hydraulic fluid port 34 is substantially increased, and suction is increased, so as to increase fuel delivery, solves the problems, such as that engine oil is not enough.
As shown in figure 4, according to double-throat carburetter of the present utility model Fig. 2 shown in the B-B directions of preferred embodiment cut open
View.
Typically only 600-800 revs/min of the rotating speed of engine idling operation, air throttle is close to close, such rotating speed institute
The trunnion vacuum of generation cannot smoothly suction out gasoline from float chamber, but vacuum behind air throttle is very high.Therefore only
An idle fuel way need to be separately set on the basis of elementary carburetor, its spray orifice is located at after air throttle, and problem is just readily solved.
More sensitive to engine running condition due to the gaseous mixture that idling needs are dense less, realization should stablize again
The idling mode of minimum speed is adjusted respectively it is necessary to carry out the adjustment of fuel-flow control and the adjustment of air throttle minimum aperture
Whole oil mass and throttle opening.Meanwhile, close ignition switch and phenomenon that engine still runs to prevent automobile,
Magnetic valve is additionally provided with carburetor main oil duct, is responsible for specially opening and ending oil supply gallery, ensure that engine can stop working rapidly.
Referring next to shown in Fig. 5, according to double-throat carburetter of the present utility model Fig. 2 shown in preferred embodiment C-
C directions sectional view.
In the present embodiment, the lower end of the float assembly 14 is provided with float pin 23.
In the present embodiment, the lower end of the needle-valve assembly 22 is provided with needle valve spring 24.
It will be apparent to those skilled in the art that double-throat carburetter of the present utility model includes each several part in this specification
Any combination.As space is limited and in order that specification simplicity, these combinations is not discussed in detail one by one herein, but seen this theory
After bright book, the scope of the present utility model that any combination of each several part being made up of this specification is constituted is self-evident.
Claims (16)
1. a kind of double-throat carburetter, it includes body（29）, the body include the part of upper, middle and lower three, upper part include air throttle
（7）, choke（11）, Air strangler spindle（10）, throttle plate pin component（1）And control arm（8）；Middle part point includes primary venturi（32）、
Main metering pin, main jet pipe（12）, mixing chamber（30）And inlet chamber（31）；Bottom point includes air inlet and float chamber part（16）, its
It is characterised by：Mixing chamber（30）And inlet chamber（31）Between be provided with primary venturi（32）With secondary trunnion (33)；Main jet pipe（12）On open
There is jet pipe oil-out（34）；Jet pipe oil-out（34）Positioned at secondary trunnion（33）It is interior.
2. double-throat carburetter as claimed in claim 1, it is characterised in that：Secondary trunnion（33）Diameter be less than or equal to main larynx
Pipe（32）Diameter.
3. double-throat carburetter as claimed in claim 1, it is characterised in that：Throttle plate pin component（1）Positioned at air throttle（7）'s
Top, air throttle（7）By two screws（6）It is fastenedly connected.
4. the double-throat carburetter as described in claim 1 or 3, it is characterised in that：Throttle plate pin component（1）It is provided with dust cap
（2）, dust-proof cushion（3）, plastics back-up ring（4）And split washer（5）.
5. double-throat carburetter as claimed in claim 1, it is characterised in that：Throttle plate pin component（1）Including throttle plate pin, should
Throttle opening adjusting screw is provided with the outside of throttle plate pin（28）, spring is provided with outside the screw（27）.
6. double-throat carburetter as claimed in claim 1, it is characterised in that：Control arm（8）By trip bolt（9）Fastening connects
Connect.
7. double-throat carburetter as claimed in claim 1, it is characterised in that：Air strangler spindle（10）Positioned at choke（11）Top
Portion.
8. double-throat carburetter as claimed in claim 1, it is characterised in that：Main jet pipe（12）Positioned at exhaust valve（7）With choke
Door（11）Between.
9. double-throat carburetter as claimed in claim 1, it is characterised in that：Float chamber part（16）Including float assembly（14）
With needle-valve assembly（22）.
10. the double-throat carburetter as described in claim 1 or 9, it is characterised in that：Float chamber part（16）Top be provided with close
Seal（13）.
11. double-throat carburetters as claimed in claim 9, it is characterised in that：Float assembly（14）Lower end be provided with float pin
（23）.
12. double-throat carburetters as claimed in claim 9, it is characterised in that：Needle-valve assembly（22）Lower end be provided with needle-valve bullet
Spring（24）.
13. double-throat carburetters as claimed in claim 1, it is characterised in that：Main jet is provided with the main metering pin（15）, it is main
The lower end of metering pin is provided with solenoid valve seat（17）.
14. double-throat carburetters as claimed in claim 13, it is characterised in that：Solenoid valve seat（17）It is resisted against electromagnetism valve assembly
（21）On.
15. double-throat carburetters as claimed in claim 13, it is characterised in that：Solenoid valve seat（17）Lower end be provided with an O
Shape sealing ring（18）With the second O-ring seals（19）.
16. double-throat carburetters as claimed in claim 14, it is characterised in that：Electromagnetism valve assembly（21）By screw association part
（20）With float chamber component（16）It is fixedly connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620282814.3U CN206256977U (en) | 2016-04-07 | 2016-04-07 | Double-throat carburetter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620282814.3U CN206256977U (en) | 2016-04-07 | 2016-04-07 | Double-throat carburetter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206256977U true CN206256977U (en) | 2017-06-16 |
Family
ID=59022078
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620282814.3U Expired - Fee Related CN206256977U (en) | 2016-04-07 | 2016-04-07 | Double-throat carburetter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206256977U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108952977A (en) * | 2018-08-20 | 2018-12-07 | 江苏农华智慧农业科技股份有限公司 | A kind of integral type Dual-fuel mixer |
| US11441518B2 (en) | 2020-07-21 | 2022-09-13 | Andreas Stihl Ag & Co. Kg | Carburetor and two-stroke engine with a carburetor |
-
2016
- 2016-04-07 CN CN201620282814.3U patent/CN206256977U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108952977A (en) * | 2018-08-20 | 2018-12-07 | 江苏农华智慧农业科技股份有限公司 | A kind of integral type Dual-fuel mixer |
| US11441518B2 (en) | 2020-07-21 | 2022-09-13 | Andreas Stihl Ag & Co. Kg | Carburetor and two-stroke engine with a carburetor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170616 |